Application of output feedback to variable structure systems

Heck, B.S.; Ferri, Antonio

doi:10.2514/3.20504

Cited by 90 publications

(39 citation statements)

References 11 publications

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“…The key design choice is the selection of an appropriate gain G in (5). A common design methodology (Heck and Ferri 1989, El-Khazali and DeCarlo 1992, Heck et al 1995, Bag et al 1997) is based on synthesizing a static output feedback gain numerically to ensure the so-called reachability condition is satisfied.…”

Section: Control Law Developmentmentioning

confidence: 99%

On the design of sliding mode output feedback controllers

Edwards

Spurgeon

Hebden

2003

International Journal of Control

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Section: Control Law Developmentmentioning

confidence: 99%

On the design of sliding mode output feedback controllers

Edwards

Spurgeon

Hebden

2003

International Journal of Control

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“…Since generating estimates of unavailable internal states is a complex problem on its own, a different kind of SMC, called output feedback SMC, has been proposed in the 1990s. This method requires only output information, restricting the definition of the sliding surface to the states that are available through measured outputs [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Relay sliding mode control based on the input-output model

Yildiz¹,

Demircioĝlu²

2016

Turk J Elec Eng & Comp Sci

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Abstract:Uncertainties, parameter changes, and disturbances lie among the most frequently encountered problems in practical control applications. Sliding mode control (SMC) is one of the robust control methods developed to provide a certain control performance under such circumstances. SMC can also be achieved in relay control systems. The aim is to obtain an overall system that is robust to disturbances, noise, and parameter changes by forcing the relay element to operate in sliding mode. While SMC methods have been traditionally developed in state-space, in relay control systems, it is possible to define SMC based on the input-output model of a system. This way, sliding motion can be achieved by only utilizing the output signal, without the need to know or measure the system states.In this study, the relay sliding mode control method based on the input-output model proposed in previous studies is revisited. Sliding conditions under ideal operating conditions are reformulated to fortify the theoretical background.Some additional issues, namely the effects of disturbances and measurement noise on the sliding mode conditions, are addressed and analyzed in detail. Finally, the theoretical results are put to the test by detailed simulation examples.

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“…In this section we consider controlling the vertical velocity of a specific VTOL aircraft (helicopter) (13) . The linearized model of the VTOL aircraft at the airspeed of 135 knots has the form as (1), the coefficients are The state variable x 1 denotes the horizontal velocity (knots), x 2 denotes the vertical velocity (knots), x 3 represents the pitch rate (degree/sec), and x 4 is the pitch angle (degree).…”

Section: Applicationmentioning

confidence: 99%

Design of Adaptive Output Feedback Variable Structure Tracking Controllers

Cheng

Wen

Chen

2006

JSME Int. J., Ser. C

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Based on the Lyapunov stability theorem, an adaptive output feedback variable structure tracking controller is proposed in this paper for a class of multi-input multi-output (MIMO) dynamic systems with mismatched uncertainties and disturbances. With an adaptive mechanism embedded in the proposed control scheme, the controller will automatically adapt the unknown upper bound of perturbations, so that the information of upper bound of perturbations is not required. Once the controlled system reaches the switching hyperplane, the state tracking errors can be driven into a small bounded region whose size can be adjusted through the design parameter. An application of flight control is given for demonstrating the feasibility of the proposed methodology.

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Application of output feedback to variable structure systems

Cited by 90 publications

References 11 publications

On the design of sliding mode output feedback controllers

On the design of sliding mode output feedback controllers

Relay sliding mode control based on the input-output model

Design of Adaptive Output Feedback Variable Structure Tracking Controllers

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